It's so cold in parts of Canada that a zoo brought their penguins inside

CNN- It's so cold in parts of Canada that many of the penguins at the Calgary Zoon have had to go indoors.

Zoo officials say they had to move king penguins inside on several days after temperatures dropped below negative 13 degrees. The penguins generally stay outside during the winter, but with one penguin chick still maturing, zoo-keepers decided to err on the side of caution.

King penguins are used to cold weather, but they generally live in milder climates than their Antarctic Emperor penguin cousins.